Yeah. I know. You do the base step, then the induction step. I didn't have the starting form right, was confused about what I was supposed to actually be proving... I was just thinking to prove the k+1 part but what I'm supposed to be proving is that the initial recurrence relation formula given...
Homework Statement
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Solve the recurrence relation (use iteration).
an = an-1 + 1 + 2n-1
a0 = 0
Then prove the solution by mathematical induction.
Homework EquationsThe Attempt at a Solution
a1 = 2
a2 = 5
a3 = 10
a4 = 19
a5 = 36
The solution appears to be an = n + 2n - 1
How are we...
Homework Statement
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Let X = {a,b}.
A palindrome over X is a string α for which α = αR (i.e., a string that reads the same forward and backward). An example of a palindrome over X is bbaabb.
Define a function from X* to the set of palindromes over X as f(α) = ααR.
Is f one-to-one? Is f...
GFauxPas: The most I know of calculus is pre-, and that I took years ago (my most recent math class prior to this one). So as you might guess I'm very much out of practice.
I found a counterexample for f being injective: f(1/2) = 2/5 = f(2). Thus the function is not one-to-one.
As for f being...
Homework Statement
Prove whether the function f(x) = x/(1+x^2) with domain & codomain = reals is one-to-one, onto, or both.
Homework EquationsThe Attempt at a Solution
I know to show if it's one-to-one I have to show a/(1+a^2) = b/(1+b^2), ultimately that a = b, I don't know how to simplify...
How are you supposed to go about putting together the power set of a set of sets such as
X = {{1},{1,2}}
What is the power set of X then? And what's the rule for calculating cardinality for the power set of a set that consists of elements which are sets such as the above? Because the set X...